Tunnu neck massager is the key to relax our neck, for those office workers who stick to desk for long time, it’s best experience to try and share.\r\n\r\n\r\nCAUTIONS and TIPS\r\n Please don\'t use it if you have any metal implants or pacemakers.\r\n Please peel off the transparent stickers on 2 metal pads before using.\r\n It would be a better experience to moisturize your neck skin well with wet paper towel or body lotion.\r\n\r\n Feel free to contact us, our customer support response within 24 hours.